<template>
  <div>
    <button @click="isShow=!isShow">显示/隐藏</button>
    <transition-group 
    appear
    >
       <h1 v-show="!isShow" key="1" >你好啊！</h1> 
       <h1 v-show="isShow" key="2">尚硅谷！</h1> 
    </transition-group>
  </div>
</template>

<script>
export default {
    name:'Test3',
    data(){
        return{
            isShow:true
        }
    }
}
</script>

<style scoped>
h1{
    background-color: orange;
}
</style>